ISP1181BBSUM STEricsson, ISP1181BBSUM Datasheet - Page 37

• Manufacturer Part Number: ISP1181BBSUM
• Manufacturer: STEricsson

Specifications of ISP1181BBSUM

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Compliant

Table 38.
CD00222684
Product data sheet
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Lock Register: bit allocation
12.3.2 Unlock Device
12.3.3 Write/Read Scratch Register
15
W
W
1
7
0
Table 37.
This command unlocks the ISP1181B from write-protection mode after a ‘resume’. In
‘suspend’ state all registers and FIFOs are write-protected to prevent data corruption by
external devices during a ‘resume’. Also, the register access for reading is possible only
after the ‘Unlock Device’ command is executed.
After waking up from ‘suspend’ state, the firmware must unlock the registers and FIFOs
via this command, by writing the unlock code (AA37H) into the Lock Register (8-bit bus:
lower byte first). The bit allocation of the Lock Register is given in
Code (Hex): B0 — unlock the device
Transaction — write 2 bytes (unlock code)
Table 39.
This command accesses the 16-bit Scratch Register, which can be used by the firmware
to save and restore information, for example, the device status before powering down in
‘suspend’ state. The register bit allocation is given in
Code (Hex): B2/B3 — write/read Scratch Register
Error code
(Binary)
0111
1000
1001
1010
1011
1100
1101
1110
1111
Bit
15 to 0
14
W
W
0
6
0
Transaction error codes
Lock Register: bit description
Symbol
UNLOCK[15:0]
Description
babble error
unexpected end-of-packet
sent or received NAK (Not AcKnowledge)
sent Stall; a token was received, but the endpoint was stalled
overflow; the received packet was larger than the available buffer space
sent empty packet (ISO only)
bit stuffing error
sync error
wrong (unexpected) toggle bit in DATA PID; data was ignored
13
W
W
1
5
1
Rev. 05 — 25 August 2010
Description
Sending data AA37H unlocks the internal registers and FIFOs for
writing, following a ‘resume’.
UNLOCKH[7:0] = AAH
UNLOCKL[7:0] = 37H
12
W
W
0
4
1
…continued
11
W
W
1
3
0
Full-speed USB peripheral controller
Table
10
W
W
0
2
1
40.
Table
© ST-ERICSSON 2010. All rights reserved.
ISP1181B
W
W
9
1
1
1
38.
W
W
8
0
0
1
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